Hyperkalaemia after Tramadol in dogs

44 reports to the FDA describe hyperkalaemia in dogs given Tramadol. That is 1.2% of all reports for this medicine, compared with 0.3% across reports for all dog medicines, so it is reported unusually often with this medicine.

44Reports
64%Marked serious
6.8%Recovered
32%Died or euthanised
59 daysTypical onset
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How soon it started

Same day
0 0.0%
1–2 days
2 8.7%
3–7 days
2 8.7%
1–4 weeks
3 13%
Over a month
16 70%

How the animals did

Recovered
3 6.8%
Still unwell when reported
10 23%
Died
7 16%
Euthanised
7 16%
Not known
17 39%

Problems reported at the same time

20 45%
14 32%
Low sodium-potassium ratio (na:k ratio)
13 30%
12 27%

Age of the animals

Under 1 year
0
1–3 years
2
4–7 years
3
8–11 years
20
12+ years
19

About this medicine

Type: medicine.

Questions owners ask

Can Tramadol cause hyperkalaemia in dogs?
44 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?
In half of the reports with dates, it started within 59 days of the first dose.
What should I do?
Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Hyperkalaemia with similar medicines

All reported side effects of Tramadol in dogs · Medicines most reported with hyperkalaemia